Thanks for your reply.
I am looking to print one of my pictures larger than I can do on my 2400. I am still not sure about whether to buy a 7800 or to wait for the next generation (probably in a year or so).
The picture is the Manhattan View from New Jersey (you can see it on my website in the New York section). The native size/resolution is 11x34 at 360dpi. I thought about printing it at about 17x52 (upsizing it in Photoshop and applying adequate sharpening). Or, I could print the Central Park panoramic view (trees and grass).
The goal would be to see the final quality of one of my pictures in this large format.
What kind of paper are you printing on? Lately, I print mostly on Luster paper (photo black).
Again, thank you very much for your reply.
P.S. website: francois-roux-photography.com (under development)